In OnLogCommand(), leverage TIMER_ANIMSTOP_ID to set the idle icon through the 'appli...

In OnLogCommand(), leverage TIMER_ANIMSTOP_ID to set the idle icon through the 'application queue'

Apparently the functions called by SetIdleIcon() aren't
thread-safe and their interaction can cause deadlocks.

An earlier version of the patch has been tested by Lee and
doesn't seem to cause obvious regressions other than the
icon change being delayed by (at least) the 10 milliseconds
until the timer fires.

This is expected to fix #3525694 reported by Tim H.